Authorities say a 78-year-old woman died of hypothermia after she and her husband took a wrong turn in Yolo County and got stranded.

Police say Harold and Raquel Labbe of Hayward had set out for Cache Creek Casino on Jan. 27. They took a wrong turn onto a dirt road running through an orchard and got their Ford Focus stuck in mud.

Police believe that the couple ran the engine to stay warm, then sought help on foot after the car ran out of gas.

The couple's son reported the couple missing Jan. 29, saying he was especially concerned because his mother had Alzheimer's disease.

A farmworker found 76-year-old Harold Labbe unconscious Monday, about 50 feet from the car. Authorities later found the body of Raquel Labbe several hundred yards away.

Harold Labbe is recovering from hypothermia at a hospital.